Mortgage repayment and overpayment in Germany: rates, savings and § 489 BGB
A practical guide to repayment rates and overpayment rights in German mortgage financing: how the Tilgungssatz affects the loan term, how overpayments reduce interest costs, and what the 10-year termination right under § 489 BGB means for borrowers.
Ahmet Parlak
Mortgage & Property Finance Expert, Vienna
TL;DR: key facts on repayment and overpayments
- Repayment rate = annual share of original loan repaid — higher rate means shorter term.
- Recommendation: at least 2–3% initial repayment; 1% leads to terms of nearly 50 years.
- Overpayment right: the standard German clause allows 5% of the original loan amount per year free of charge.
- Early overpayments save disproportionately more interest — the earlier in the loan life, the better.
- § 489 BGB: after 10 years of fixed interest you can give 6 months notice and exit without any penalty.
- Early repayment penalty is capped at the bank's actual interest loss — not a punitive fee.
Last updated: 2026-03-16 • This guide is for general information only and does not constitute individual financial advice. Specific figures may vary depending on the loan contract and prevailing interest rates.
Short answer: repayment and overpayments
The repayment rate (Tilgungssatz) determines how quickly you pay off your mortgage. At 2% repayment on €300,000 with 3.5% interest: term 33 years, total interest ~€173,000. At 3% repayment: term 25 years, total interest ~€120,000. An annual overpayment allowance of 5% is included in most German mortgage contracts at no extra cost.
TL;DR: key facts on repayment and overpayments
- •Repayment rate = annual share of original loan repaid — higher rate means shorter term.
- •Recommendation: at least 2–3% initial repayment; 1% leads to terms of nearly 50 years.
- •Overpayment right: the standard German clause allows 5% of the original loan amount per year free of charge.
- •Early overpayments save disproportionately more interest — the earlier in the loan life, the better.
- •§ 489 BGB: after 10 years of fixed interest you can give 6 months notice and exit without any penalty.
- •Early repayment penalty is capped at the bank's actual interest loss — not a punitive fee.
Repayment rate: meaning and effect
The Tilgungssatz specifies what percentage of the original loan amount is repaid annually. With a €300,000 loan and a 2% rate, you repay €6,000 in the first year. The monthly instalment (Annuität) — combining interest and principal — stays constant. As the outstanding balance falls, the interest share shrinks and the repayment share grows automatically.
German banks formally accept a minimum initial repayment rate of 1%, but this is rarely advisable: the term stretches to nearly five decades and total interest can exceed the loan principal. Experts recommend at least 2–3% initial repayment.
Example with €300,000 loan and 3.5% nominal interest rate:
- •1% repayment: term approx. 47 years, total interest approx. €252,000
- •2% repayment: term approx. 33 years, total interest approx. €173,000
- •3% repayment: term approx. 25 years, total interest approx. €120,000
- •4% repayment: term approx. 20 years, total interest approx. €89,000
Overpayment right: how it works
The Sondertilgungsrecht is the contractual right to make additional lump-sum repayments without incurring an early repayment penalty. The vast majority of German mortgage contracts include a standard clause allowing up to 5% of the original loan amount per year free of charge. On a €300,000 loan, that is up to €15,000 annually at no extra cost.
Some lenders offer a wider allowance of up to 10% per year on request, potentially at a marginally higher interest rate (a few basis points). Without any overpayment clause, every extra payment would trigger a penalty.
Important: the overpayment right must be negotiated at contract signing — it cannot easily be added later. The slightly higher interest cost is typically recovered quickly through the interest savings generated by overpayments.
- •Standard clause: 5% of original loan per year — on €300,000 up to €15,000/year penalty-free
- •Extended clause: up to 10% per year possible, potentially with a small rate premium
- •Without the clause: every extra payment triggers an early repayment penalty
- •Timing: overpayments can be made monthly or annually — interest savings are immediate
- •Unused overpayment allowance typically lapses at year-end and cannot be carried forward
Impact of overpayments: worked example
Starting point: €300,000 loan, 3.5% nominal interest, 2% initial repayment — original term approx. 33 years. How much do overpayments shorten the term and reduce total interest?
The key principle: the earlier in the loan life an overpayment is made, the greater its effect. An overpayment after 5 years reduces the outstanding balance and therefore the basis for all future interest payments over the remaining term.
- •One-off overpayment of €15,000 after 5 years: term shortens by approx. 2.5 years, interest saving approx. €18,000
- •Annual overpayment of €5,000 for 5 years (5 × €5,000): term shortens by approx. 4 years, interest saving approx. €29,000
- •Rule: the earlier in the loan life you overpay, the greater the interest saving
- •Practical tip: tax refunds, annual bonuses, or inheritances are ideal for overpayments
Changing the repayment rate during the fixed-rate period
The right to change the repayment rate during the fixed-rate term must also be agreed contractually. Most modern German mortgage contracts allow 1–2 free rate changes over the fixed-rate period.
Increasing the rate makes sense when income has risen or other financial headroom has opened up. The higher monthly payment reduces the outstanding balance faster and saves interest over time.
Reducing the rate provides relief during a temporary income drop — for example during parental leave or unemployment. The end of the fixed-rate period is the ideal moment to adjust the repayment rate freely and without penalty.
Early repayment penalty in Germany
If you wish to repay your loan early beyond the agreed overpayment allowance, an early repayment penalty (Vorfälligkeitsentschädigung) applies. This compensates the bank for the lost interest income until the end of the fixed-rate period.
In Germany the penalty is capped at the bank's actual interest loss. It may not exceed the difference between the agreed contract rate and the rate the bank could achieve by reinvesting the funds (the so-called active-passive or active-active method).
The 10-year special termination right under § 489 BGB is the most important exception: regardless of the agreed fixed-rate term, you can terminate your loan after 10 years from full drawdown with 6 months' notice — without any early repayment penalty. This right applies even to 15- or 20-year fixed-rate mortgages: after 10 years and 6 months you can give notice and refinance on better terms.
- •Early repayment penalty is capped at the bank's actual loss — not a punitive charge
- •§ 489 BGB: after 10 years of fixed interest, exit with 6 months' notice — free of charge
- •Applies even to 15/20-year fixed rates: termination possible after 10 years + 6 months
- •Practical tip: for fixed-rate terms over 10 years, always note the earliest termination date in your calendar
Germany vs. Austria: repayment rules compared
The legal framework for early repayment and loan termination differs significantly between Germany and Austria.
- •DE § 489 BGB: always terminable after 10 years with 6 months' notice — no early repayment penalty
- •AT § 26 HIKrG: no cost-free termination after 10 years; instead, a legally capped prepayment penalty of max. 1%
- •DE: overpayment right must be agreed contractually; standard clause is 5% per year
- •AT: similar — overpayment right agreed contractually, penalty legally capped
- •Bottom line: the German § 489 right is significantly more favourable for borrowers than the Austrian rules
FAQ: repayment and overpayments
At least 2–3% initial repayment. At 3.5% interest and 2% repayment: 33-year term, €173,000 in interest. At 3% repayment: 25 years, €53,000 less in interest.
The German standard is 5% of the original loan per year at no cost. Some lenders offer 10%. Without this clause, any extra payment triggers an early repayment penalty.
After 10 years of fixed interest you can give 6 months' notice and exit without any penalty (§ 489 BGB). This applies even to 15- or 20-year fixed-rate mortgages.
A higher repayment rate = permanently higher monthly payment. An overpayment (Sondertilgung) = a one-off extra payment on top of the regular instalment. Both reduce the outstanding balance and save interest — overpayments are more flexible.
Rule of thumb: overpaying makes sense when the mortgage rate exceeds the safe investment return. At 3.5% mortgage vs. 2% savings account → overpayment wins. At 3.5% mortgage vs. 6% ETF return → ETF is better.
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